Callback to return custom string on MissingTranslationEvent

[tomaszkane]

What steps will reproduce the problem?

$thisMessageIdNotExist = 'xyz';
echo $translator->translate($thisMessageIdIsNotExist);

What do you get?

xyz

What do you want to get?

Oh no, "xyz" is not translated yet!

When event MissingTranslationEvent was triggered I want to return result of my callback not messageId string or fallbackLocale result.

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Additional info

Q	A
Version	1.0.2
PHP version	8.0
Operating system	KDE Neon

[samdark]

Could be achieved by using result of dispatch() method that returns modified event with the message to format.